Portion of a chair back for dental patients

ABSTRACT

A back for a patient chair having a back shell with a substantially rigid central S-shaped central portion and laterally extending wing portions which have sufficient flexibility to allow deflection in the direction of the front surface upon imposition of a force. The back consists of a formed back shell, a cushion layer laid thereover and an upholstery layer covering the cushion, with the upholstery layer adhered to the cushion and having edge margins wrapped around the outer edge margins of the cushion. The cushion and upholstery material are secured to the back shell through adhesive applied between the wrapped over edge margin portions of the upholstery material and the back shell. &lt;IMAGE&gt;

FIG. 1 is a front perspective view of a portion of a chair back for dental patients.

FIG. 2 is a rear perspective view of the portion of the chair back of FIG. 1.

FIG. 3 is a top view of the portion of the chair back of FIG. 1.

FIG. 4 is a right-side elevational view of the portion of the chair back of FIG. 1. The left-side elevational view is omitted as being a mirror image of the right-side elevational view.

FIG. 5 is a front perspective view of the portion of the chair back for dental patients shown in the context of an exemplary dental chair.

The broken lines in the Figures are for illustrative purposes only and form no part of the claimed design. Additionally, the bottom view is omitted as being devoid of surface ornamentation. 

I claim the ornamental design for a portion of a chair back for dental patients, as shown and described. 